Table 1.

Bulk density and macroporosity of compacted sandy loam or clay loam samples amended with increasing percentages of food waste compost or peatz.

SamplesBulk densitySignificanceyxMacroporositySignificanceyxr2
Sandy loam/compacted1.76ax0.0207ax
Sandy loam/uncompacted1.51bx0.0387bx
Sandy loam + 10% compost/compacted1.68a0.0243ab
Sandy loam + 33% compost/compacted1.50by0.0267by
Sandy loam + 50% compost/compacted1.42by0.0413cy
Sandy loam + 75% compost/compacted0.90cy0.0557dy0.90
Sandy loam + 10% compost/uncompacted1.50a0.0277a
Sandy loam + 33% compost/uncompacted1.22by0.0400by
Sandy loam + 50% compost/uncompacted1.17by0.0517cy
Sandy loam + 75% compost/uncompacted0.83cy0.0627dy0.94
Sandy loam + 10% peat/compacted1.62a0.0323by
Sandy loam + 33% peat/compacted1.38by0.0477cy
Sandy loam + 50% peat/compacted1.38by0.0543dy
Sandy loam + 75% peat/compacted0.62cy0.0620ey0.86
Sandy loam + 10% peat/uncompacted1.17by0.0460by
Sandy loam + 33% peat/uncompacted1.22by0.0510by
Sandy loam + 50% peat/uncompacted0.93cy0.0677cy
Sandy loam + 75% peat/uncompacted0.54dy0.0710cy0.87
Clay loam/compacted1.84ax0.0125ax
Clay loam/uncompacted1.26bx0.0305bx
Clay loam + 10% compost/compacted2.36a0.0120a
Clay loam + 33% compost/compacted2.01by0.0213by
Clay loam + 50% compost/compacted1.61cy0.0257by
Clay loam + 75% compost/compacted1.28dy0.0323cy0.69
Clay loam + 10% compost/uncompacted1.30a0.0323a
Clay loam + 33% compost/uncompacted1.10by0.0270a
Clay loam + 50% compost/uncompacted0.94bcy0.0290a
Clay loam + 75% compost/uncompacted0.85cy0.0337by0.85
Clay loam + 10% peat/compacted1.81a0.0190a
Clay loam + 33% peat/compacted1.63by0.0327by
Clay loam + 50% peat/compacted1.41cy0.0350bc*
Clay loam + 75% peat/compacted1.10dy0.0430cy0.97
Clay loam + 10% peat/uncompacted1.15ab0.0340a
Clay loam + 33% peat/uncompacted0.96by0.0403by
Clay loam + 50% peat/uncompacted0.76cy0.0377by
Clay loam + 75% peat/uncompacted0.53dy0.0517cy0.98
  • zHalf of the samples were recompacted after amendment.

  • ySignificantly different than the unamended samples at alpha 0.05.

  • xSignificantly different between unamended samples at alpha 0.05.

  • Letters that are the same are not significantly different from one another.